Noun. No likelihood of something happening. E.g."There's fat chance of getting me to do a parachute jump!" Exclam. No chance! E.g."Persuade him to do a parachute jump? Fat chance! You'll never get him to do it."
FAT CHANCE
Meaning of FAT CHANCE in English
Slang English vocab. Английский сленговый словарь. 2012